Turkey Tail Mushroom
Also known as: trametes versicolor, coriolus versicolor, PSK, PSP, polysaccharide-K
Recommended Dosage
1000–3000 mg
Turkey tail (Trametes versicolor) contains polysaccharopeptides PSK and PSP that are among the most extensively researched immunomodulatory compounds from any medicinal mushroom. PSK is an approved adjunct cancer therapy in Japan, with meta-analyses showing improved survival rates in gastric and colorectal cancer when combined with chemotherapy. For general use, turkey tail enhances natural killer cell activity and supports gut microbiome diversity through its prebiotic beta-glucans.
TL;DR: Most-studied medicinal mushroom for immune support. PSK/PSP polysaccharides are approved as anticancer adjunct therapy in Japan. Strong evidence for immune modulation and gut microbiome support.
Quick Facts
Evidence
Grade B
Studies
2
Interactions
1
Forms
1
Evidence Rating: Grade B — Moderate Evidence
Some RCTs with positive results, or strong observational evidence. More research may refine our understanding.
Interaction Warnings
Potent immune stimulant — may counteract immunosuppressive therapy.
Important Notes
- Approved as anticancer adjunct in Japan (Krestin/PSK) since 1977
- Hot water extract preferred over raw mushroom for beta-glucan extraction
- Look for products standardized to polysaccharide content
Clinical Evidence (2 studies)
Turkey tail mushroom and immune response in breast cancer
Torkelson CJ et al. (2012) — ISRN Oncol
Turkey tail 3-9g/day improved immune status (increased NK cells and lymphocytes) in immunocompromised breast cancer patients post-radiation
View on PubMedPSK as cancer immunotherapy: systematic review
Eliza WL et al. (2012) — Cancer Immunol Immunother
PSK from turkey tail improved 5-year survival rates in gastric and colorectal cancer as adjunct to chemotherapy in Japanese clinical trials
View on PubMedAlternatives to Consider
These supplements target similar goals and may be worth considering alongside or instead of Turkey Tail Mushroom.
Chlorella
Grade CGreen algae rich in chlorophyll, protein, iron, and B12. Evidence for immune support and metabolic markers. Broken-cell wall form required for bioavailability. Complementary to spirulina.
Quercetin
Grade BVersatile flavonoid with senolytic, immune, and anti-inflammatory properties. Zinc ionophore. Phytosome form critical for absorption.
Black Seed Oil
Grade BWidely studied traditional remedy with strong anti-inflammatory properties from thymoquinone. Evidence for metabolic health, immune modulation, and gut health. Oil form preferred for absorption.
Related Supplements
Chlorella
Grade C — PreliminaryGreen algae rich in chlorophyll, protein, iron, and B12. Evidence for immune support and metabolic markers. Broken-cell wall form required for bioavailability. Complementary to spirulina.
NAC (N-Acetyl Cysteine)
Grade B — Moderate EvidencePrecursor to glutathione (master antioxidant). Strong evidence for respiratory health, liver support, and psychiatric conditions.
Sulforaphane
Grade B — Moderate EvidencePowerful Nrf2 activator from cruciferous vegetables. Evidence for air pollution detoxification and H. pylori eradication.
Quercetin
Grade B — Moderate EvidenceVersatile flavonoid with senolytic, immune, and anti-inflammatory properties. Zinc ionophore. Phytosome form critical for absorption.
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⚕️ Important Disclaimer
This information is for educational purposes only. It is not medical advice. Always consult a healthcare provider before starting any supplement regimen, especially if you take medications or have health conditions.
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